shiner
New elf
- Thread starter
- #1
Hello,
I received my j1sys products, but am unclear on exactly how to connect the chain of devices. In principle, I understand what the solution is designed to do with respect to gateway>transport over cat5>receiver>pixel+power injector if needed. Prior to coming to the forum to ask the questions, I checked the documentation sent with the product :-\ , and the J1Sys Support Documentation page. In chat, Dave (lithgowlights) pointed me to FE's guide for the J1Sys Solution, but my specific questions were not answered.
I have one P12x gateway, three PPD-C 4 output transmitters, and twelve PPR-A receivers.
My plan is to put a PPR-A receiver at each pixel element in my display. Each has a fairly low node count, but some exceed the 25 limit of the PPR and will require the PPI power injector.
1) Is there a guide or rule used to calculate the needed power supply size for the system? In my case, I am using this solution to power 6803 nodes (5v) from Ray. At this time, I do not have a high number of them, but use them to outline the windows in my display. I have read that 36v is the recommendation here, but I am unsure how to size this based on the nodes in the display. The PPR down converts the (7v-40v) power to 5v 1.5a output to the pixel.
2) The P12x wires via 4-conductor wire over to the PPD-C. The inputs here would be 1-to-1 (I have 3 PPD-C units). No real question here, just confirming my understanding of the system wiring.
3) Cat5e or Cat6 would be used between the PPD-C and the PPR-A. The documentation I read suggests better distance performance out of the cat6. I am planning runs of less than 50ft, so is there a benefit to upping the cable to Cat6 or is that only needed at the 300+ft range?
4) Wiring out of the PPR is now a mystery. I understand I can use the 5v out to power the first 25 pixel nodes. The confusion comes from the undocumented phoenix connector stack - there are two 4-pin phoenix connectors here, so what do they do? As shipped, the top connector has a jumper inserted between pins 3 and 4. How are these two different phoenix connectors intended to be used/wired?
5) When using the PPI to power the second set of 25 pixels, what feeds the input side of the PPI? I theorize that you are expected to take v+ and v- out of the top connector of the PPR and cable that into the PPI. You then splice into the pixel strand for the 4 remaining terminals. The board then boosts the voltage back up to the needed 5v 1.5a power feed. Is this correct?
6) Should I be concerned with heat dissipation and the PPR? I have constructed a 1 1/4" wide PVC tube with caps on both ends. The Cat5e enters one end, and Ray's 4-pin waterproof screw on connector exits the other end. I plan to caulk or hot glue my PVC connections/openings to seal them. As the regulator converts the voltage, my expectation is that there will be heat exchanged in the process and I am unsure if this seemingly sealed enclosure is going to be harmful. The device would be outside, and it is cold here, so will the passive heat sink of the PVC be enough. I imagine it would, but I figure I would ask so as not to smoke these little devices.
Thank you in advance!
I received my j1sys products, but am unclear on exactly how to connect the chain of devices. In principle, I understand what the solution is designed to do with respect to gateway>transport over cat5>receiver>pixel+power injector if needed. Prior to coming to the forum to ask the questions, I checked the documentation sent with the product :-\ , and the J1Sys Support Documentation page. In chat, Dave (lithgowlights) pointed me to FE's guide for the J1Sys Solution, but my specific questions were not answered.
I have one P12x gateway, three PPD-C 4 output transmitters, and twelve PPR-A receivers.
My plan is to put a PPR-A receiver at each pixel element in my display. Each has a fairly low node count, but some exceed the 25 limit of the PPR and will require the PPI power injector.
1) Is there a guide or rule used to calculate the needed power supply size for the system? In my case, I am using this solution to power 6803 nodes (5v) from Ray. At this time, I do not have a high number of them, but use them to outline the windows in my display. I have read that 36v is the recommendation here, but I am unsure how to size this based on the nodes in the display. The PPR down converts the (7v-40v) power to 5v 1.5a output to the pixel.
2) The P12x wires via 4-conductor wire over to the PPD-C. The inputs here would be 1-to-1 (I have 3 PPD-C units). No real question here, just confirming my understanding of the system wiring.
3) Cat5e or Cat6 would be used between the PPD-C and the PPR-A. The documentation I read suggests better distance performance out of the cat6. I am planning runs of less than 50ft, so is there a benefit to upping the cable to Cat6 or is that only needed at the 300+ft range?
4) Wiring out of the PPR is now a mystery. I understand I can use the 5v out to power the first 25 pixel nodes. The confusion comes from the undocumented phoenix connector stack - there are two 4-pin phoenix connectors here, so what do they do? As shipped, the top connector has a jumper inserted between pins 3 and 4. How are these two different phoenix connectors intended to be used/wired?
5) When using the PPI to power the second set of 25 pixels, what feeds the input side of the PPI? I theorize that you are expected to take v+ and v- out of the top connector of the PPR and cable that into the PPI. You then splice into the pixel strand for the 4 remaining terminals. The board then boosts the voltage back up to the needed 5v 1.5a power feed. Is this correct?
6) Should I be concerned with heat dissipation and the PPR? I have constructed a 1 1/4" wide PVC tube with caps on both ends. The Cat5e enters one end, and Ray's 4-pin waterproof screw on connector exits the other end. I plan to caulk or hot glue my PVC connections/openings to seal them. As the regulator converts the voltage, my expectation is that there will be heat exchanged in the process and I am unsure if this seemingly sealed enclosure is going to be harmful. The device would be outside, and it is cold here, so will the passive heat sink of the PVC be enough. I imagine it would, but I figure I would ask so as not to smoke these little devices.
Thank you in advance!
